Wall charger



FIG. 1 is a front, bottom, left perspective view of a wall charger showing our new design;

FIG. 2 is a rear, top, left perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a right side view thereof.

The broken lines shown in the drawings illustrate portions of the wall charger that form no part of the claimed design. 

CLAIM The ornamental design for a wall charger, as shown and described. 